Cut beef steak into 1-1/4" pieces. Toss beef and bell peppers with 1 Tbsp. basil, dressing and garlic. Thread beef and peppers alternately onto skewers.
Mix orzo ingredients in bowl; keep warm.
Place kabobs on grill over medium, ash-covered coals. Grill, uncovered, about 9 to 11 minutes for medium rare to medium doneness, turning occasionally. Serve with orzo. (Or to broil, place kabobs on rack in broiler pan so surface of beef is 3" to 4" from heat. Broil about 9 to 12 minutes for medium rare to medium doneness, turning once.)